diff --git a/prompts/src/services/jimeng.service.ts b/prompts/src/services/jimeng.service.ts
index e4835dc..6f6c18a 100644
--- a/prompts/src/services/jimeng.service.ts
+++ b/prompts/src/services/jimeng.service.ts
@@ -80,7 +80,7 @@ export class JimengService {
     }
   }
 
-  async downloadImage(url: string): Promise<Buffer> {
+  async downloadImage(url: string): Promise<Uint8Array> {
     const controller = new AbortController();
     const timeoutId = setTimeout(() => controller.abort(), this.timeout);
 
@@ -96,7 +96,7 @@ export class JimengService {
       }
 
       const arrayBuffer = await response.arrayBuffer();
-      return Buffer.from(arrayBuffer);
+      return new Uint8Array(arrayBuffer);
     } catch (error: any) {
       clearTimeout(timeoutId);
       if (error.name === 'AbortError') {
diff --git a/prompts/src/task/image-creator.job.ts b/prompts/src/task/image-creator.job.ts
index 0e87723..e7745ba 100644
--- a/prompts/src/task/image-creator.job.ts
+++ b/prompts/src/task/image-creator.job.ts
@@ -95,7 +95,7 @@ export async function addImageDownloadJob(
     attempts: DOWNLOAD_MAX_RETRIES,
     backoff: {
       type: 'exponential',
-      delay: 2000, // 初始 2 秒
+      delay: 200, // 初始 200 毫秒
     },
     removeOnComplete: 100,
     removeOnFail: 100,
@@ -147,7 +147,7 @@ export async function runImageDownloadWorker(): Promise<void> {
     },
     {
       connection,
-      concurrency: 3,
+      concurrency: 1, // 避免更新冲突
       lockDuration: 60000 * 5, // 锁持续时间 5分钟
       stalledInterval: 30000, // 每30秒检查一次 stalled
     } as any
@@ -162,7 +162,7 @@ export async function runImageDownloadWorker(): Promise<void> {
     notify.notify(`[ImageDownload] \nJob failed: ${job?.id}, error: ${err.message}\n Job data: ${JSON.stringify(job?.data)}`);
   });
 
-  console.log('[ImageDownload] Worker started');
+  console.log('[ImageDownload] Worker 开始运行');
 }
 
 /**
@@ -226,7 +226,7 @@ export async function runImageGenerateWorker(): Promise<void> {
     }
   });
 
-  console.log('[ImageGenerate] Worker started');
+  console.log('[ImageGenerate] Worker 开始运行');
 }
 
 export { updateItemStatus };
diff --git a/prompts/src/task/perfect-sentence.job.ts b/prompts/src/task/perfect-sentence.job.ts
index 61a83ed..657226b 100644
--- a/prompts/src/task/perfect-sentence.job.ts
+++ b/prompts/src/task/perfect-sentence.job.ts
@@ -79,7 +79,7 @@ export const runPerfectSentencePromptWorker = () => {
         const perfectPrompt = perfect.clearPerfectTags(ai.responseText!) || '';
         console.log(`[Sentence] 提示词优化 ${itemId}:\n`, perfectPrompt);
 
-        await updateItemStatus(itemId, '提示词优化完成',{
+        await updateItemStatus(itemId, '提示词优化完成', {
           description: perfectPrompt
         });
         await sleep(500); // 确保数据已保存
@@ -116,6 +116,6 @@ export const runPerfectSentencePromptWorker = () => {
       notify.notify(`[Sentence] 提示词优化工作者在条目 ${job.data.itemId} 达到最大重试次数后停止`);
     }
   });
-
+  console.log('[Sentence] Worker 开始运行');
   return worker;
 };
\ No newline at end of file